Mercedes-Benz 300 E 1990 Owner's Manual page 84

Wheels
Replace rims or tires with the
same designation, manufacturer
and type as shown on the original
part. See your authorized
MERCEDES-BENZ dealer for
further information.
Warning!
Do not mix different tire con­
struction types (i.e. radial,
bias, and bias-belted) on your
car because handling may be
adversely affected and may
result in loss of control.
See your authorized MERCEDES-
BENZ dealer for information on
tested and recommended rims
and tires for summer and winter
operation. They can also offer
more advice concerning tire
service and purchase.
82
Tire replacement:
Front tires should be replaced in
sets. Furthermore - in the event of
tire replacement - the spare
wheel, if possible, should be used
on the rear axle.
Rims and tires must be of the
same size. For dimensions see
''Technical Data" .
We recommend that you break in
new tires for approx. 100 km
(60 miles) at moderate speed. It is
imperative that the wheel mount­
ing bolts be retightened after
approx. 100 to 500 km (60 -
300 miles).
On new vehicles retightening is
carried out during the 1st in­
spection. Retightening is also
necessary whenever wheels are
fitted, e.g. when the spare wheel
is used for the first time or when a
set of wheels with M + S tires are
installed.
Tightening torque: 110 Nm
(80 ft. lb.).
For rim and tire specifications,
refer to ''Technical Data" .
Warning!
Worn, old tires can cause
accidents. If the tire tread is
badly worn, or if the tires have
sustained damage, replace
them.
When replacing rims, use only
genuine MERCEDES-BENZ
wheel bolts (identified by
Mercedes star) specified for
the rim type. Failure to do so
can result in the bolts
loosening and possibly an
accident.
Rotating wheels:
The wheels can be rotated ac­
cording to the degree of tire wear
while retaining the same direction
of travel. Rotating, however,
should be carried out, at a
mileage of 5000 - 10 000 km
(3000 - 6000 miles) before the
characteristic tire wear pattern
(shoulder wear on front wheels
and tread center wear on rear
wheels) becomes visible, as
otherwise the driving properties
deteriorate.